Furnace-radiator.



G. MAAG.

FURNACE RADIATOR. APPLICATION FILED MAY 26, 1905.

PATENTED FEB. 27, 1906.

2 SHEETS-SHEET 1.

PATENTBD FEB. 27, 1906.

G. MAAG. FURNACE RADIATOR.

APPLICATION FILED MAY 26, 1905 2 SHEETS-SHEET 2,

UNITED STATES PATENT OFFICE.

GEORGE MAAG, OF AKRON, OHIO, ASSIGNOR TO THE XXTH CENTURY HEATING ANDVENTILATING COMPANY, OF AKRON, OHIO, A CORPO- RATION or OHIO.

FURNACE-RADIATOR.

Specification of Letters Patent.

Patented Feb. 2'7, 1906.

Application filed May 26, 1905, Serial No. 262,399.

radiator primarily designed for use in connection with furnaces intendedto burn gas, wood, and anthracite coal, wherein the proper circulationof the products of combustion will be through a long series ofcircuitous flues to accomplish as great a diffusion as possible of theheat carried by the products of combustion and also to provide inconnection with said radiator means whereby the products of combustionmay, in one instance, be carried directly through the fiues to theofltake-flue without further circulation there- The invention also aimsto provide means for simultaneously opening all the flues in theradiator to the passage of the'products of combustion, thus shorteningthe length of travel of the said products and increasing the draft ofthe furnace thereby.

The invention further aims to provide means for opening the beforementioned flues, which will be simple and easily reached from acharging-door of the furnace at any time, so that the flues may bereadily accessible for the purpose of cleaning, as well as to open themto the passage of the products of combustion to the uptake-flue. i

The invention consists, essentially, in providing a hollow cylindricaldrum, through which is a concentric opening for the passage of theheated air from the lower portions of the casing through the radiator tothe upper portions thereof, as well as a passage around the inside ofthe radiator for the products of combustion, and in making theconcentric opening for the passage of the heated air extend in the formof a broken circle, the point where the break occurs in this circlebeing the point'where the fuel is fed to the fire-pot.

The invention further consists in providing the space between the wallsof the radiatorwith a series of circumferentially-arranged baflie"-plates so disposed that the products ofcombustion after leaving thefirepot will pass either in a direct course to the offtake-flue or, ifdesired, in a circuitous manner thereto. In accomplishing this it isdesigned to have the products of combustion leave the fire-pot on eitherside of the charging-door and there enter the circumferential flues,thus compelling, as far as possible, the filling of the entirecombustion-chamber of the furnace with the products of combustion beforethey depart therefrom.

With the foregoing and other objects in view the invention consists ofthe novelconstruction, combination, and arrangement of come within thescope of the claim hereunto appended.

In the drawings, wherein like reference characters denote correspondingparts throughout the several views, Figure 1 is a perspective view of afurnace with the casing thereof in dotted lines and a portion of theouter shell of the radiator broken away to better illustrate theinterior thereof. Fig. 2 is a vertical central section of the radiatorat the line X of Fig. 3, and Fig. 3 a horizontal section at the line Yof Fig. 2.

Referring to the drawings, 1 represents the outer wall of the lowerportion of the furnace, wherein is situated the ash-pit to, which accessis had by means of the door 2, and upon this portion of the furnace ismounted a casing-ring 3, which is designed to support the upper casing.(Illustrated in the drawings by dotted lines and designated by thenumeral4.) This furnace is provided with the ordinary fire-pot and grateover the ash-pit constituting a heater for the device; but as theseelements are not essential to the understanding of this invention theyare not shown, and upon the fire-pot of this device is mounted myimproved radiator. This radiator consists of a cast-iron top member 5and bot tom member 6, and extending between these members andsurrounding the mechanism hereinafter described is an external casing 7.The bottom member 6 of the radiator is pro vided with a central openingsurrounded by a downwardlyextending flange adapted to project into thefirepot, whereby communication is established with the heater of thedevice, and this downwardly extending flange also serves to sustain andsteady the radiator. The external casing 7 of the radiator is formedfrom continuous sheet metal, excepting where it is interrupted in frontby the pouch 8, which leads from the chargingdoors 9 in the outer shell4 to the heater. 1n the top and bottom members 5 and 6 are elongatedapertures registering vertically with each other and substantiallyconcentric with the general outlines of the radiator. Extending betweenthe top and bottom members 5 and 6 is a second casing located adjacentthese elongated apertures and conforming in outline to them, wherebythere is formed an opening 10. The outer portion of this second casingis designated in the drawings by the reference-numeral 11 and the innerportion by the reference-numeral 12, and these two portions are unitedat their ends by curvilinear portions 14. These walls 11 and 12constitute the shell of the upwardly-extending air-heating flue 10. Thespace inclosed by the wall 12 of the second casing and covered at thetop by the member 5 constitutes a heating-chamber of the device and isin open communication with the heater thereof through the aperture inthe bottom member 6. The space existing between the outer wall 11 of thesecond casing and the external casing 7 forms a second heating-chamberof my improved radiator, and this second heating-chamber is also in opencommunication with the heater of the device through the space existingaround the curvilinear portions 14 of the second casing.

It will be stated that the top and bottom members of the radiator areheld together and clamped upon the external casing 7 by means ofstay-bolts 13, which may be placed at any location where necessarythroughout the body thereof.

From the rear portion of the external casing 7 of the radiator thereleads a direct outlet-flue 15, which is provided with an ordinary damper16 (see Fig. 2) and is connected with a second outlet 17, which takesoff from the lower portion of the casing 7. This second outlet 17 isgenerally provided with a check-damper 18, which is of the ordinaryconstruction.

In order to cause the products of combustion, which arise from theheater and pass around the curvilinear ends 14 of the second casing andenter the second heating-cham ber, to travel a circuitous path and todistribute as much of their heat as possible, I provide in the secondheating-chamber between the wall 11 and the external casing 7 aplurality of circumferential baffle-plates. I find that in placing thesebaflie-plates the best arrangement consists in providing two upperbafiie-plates 19, extending from near the curvilinear portions 14 onboth sides of the radiator to near the opening where the outletflue 15is attached to the casing 7; but their ends are separated a slightdistance, forming an opening to permit the products of combustion topass over their upper surfaces and to then turn downwardly and returntoward the charging-doors 9. Below the baffle-plates 19 I place a secondelongated bafiie-plate 20, whose ends start a greater distance from thecurvilinear portions 14 than do the ends of the baflle-plates 19. Thisbaffle-plate 20 extends circumferentially through the space between thecasing 7 and wall 11 and approximately midway between the baffle-plates19 and the bottom member 6. In order to make the second heating-chamberas long as possible and to cause the products of combustion to go overthe top of the baffie-plates 19, I place upwardly-extendingbaflie-plates 21 on the member 6, which is provided with steadying-lugs22, and I sustain their upper ends by means of removable pins 23, whichpass through the baffle-plates 19, as well as the baflle-plates 21.

It will be seen from the foregoing that the products of combustion willpass from the fire-pot in the direction of the arrows in Fig. 1, overthe baflie-plates 19 and around their rear ends, and from thence aroundthe front ends of the baffle-plate 20 and from thence under thebaffle-plate 20 to the outlet 17. It will be further seen that it willbe necessary in order to cause this passage of the products ofcombustion around these various bafiieplates that the damper 16 in theoutlet 15 must be in the position shown in Fig. 2; otherwise theproducts of combustion will pass directly out the outlet 15 and nottraverse the path just described for them. It is also apparent thatafter the bafHe-plates 21 are removed, which may be easily done byreaching into the charging-doors, the products of combustion will passdirectly through the second heating-chamber to the outlets.

When it is necessary to clean the bafHeplates 19 and 20 and the upperpart of the member 6 between the casing 7 and wall 11 and the fluesexisting therebetween, the baffle-plates 21 are withdrawn by removingthe pins 28 and lifting them out through the chargingdoors. Then asuitable utensil may be employed to remove any accumulation thereincontained.

What I claim, and desire to secure by Letters Patent, is-

A radiator comprising a heating-chamber adapted to be placed incommunication with a heater, a second heating-chamber surrounding saidfirst mentioned heating chamber and in open communication therewith,said chambers being formed by top and bottom members, each of saidmembers being provided with an elongated aperture adapted to registereach with the other, an external casing connecting said top and bottommembers,

' a second casing connecting said top and bottom members, locatedadjacent to said elongated apertures and forming in connection therewithan air-heating flue through said radiator, said bottom member beingprovided with a second aperture to adapt the firstmentionedheating-chamber to be placed in communication with a heater, the secondheating-chamber being provided with two outlets therefrom, a pluralityof baflie-plates arranged in said second heating-chamber in planesparallel with said top and bottom members, one of said bafHe-platesbeing elongated and spaced from the bottom member to form fiues incommunication with one of said outlets, the others of saidbafiEle-plates being located between the top member and said elongatedbafile plate and extended over the respective ends thereof to form fluesand removable baffle-plates connecting said lastmentioned baffle-plateswith said bottom member.

In testimony whereof I have hereunto set my hand in presence of twosubscribing wit- GEORGE MAAG. Witnesses:

C. E. HUMPHREY, GLENARA Fox.

